WA5344200 · Washington
LAKE MARGARET WATER SYSTEM
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 43
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 40
Counties listed by EPA · King County, Washington
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 43 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2566962 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end October 8, 2025 · first reported December 11, 2025 · EPA return-to-compliance field October 8, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 66962ENF October 8, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952996 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952992 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952991 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952990 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952989 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952987 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952985 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952984 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952983 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952982 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952981 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952980 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952979 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952977 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952976 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952969 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952968 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952964 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952380 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 24674952378 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 26, 2024 · EPA return-to-compliance field March 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832996 · Styrene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832992 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832991 · Toluene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832990 · Benzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832989 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832987 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832985 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832984 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832983 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832982 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832981 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832980 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832979 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832977 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832976 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832969 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832968 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832964 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832380 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 23392832378 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported March 29, 2024 · EPA return-to-compliance field December 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3067495ENF June 19, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2362742 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end October 6, 2023 · first reported March 29, 2024 · EPA return-to-compliance field October 6, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 62742ENF October 6, 2023 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 2260682 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end December 15, 2022 · first reported December 28, 2022 · EPA return-to-compliance field December 15, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 60682ENF December 15, 2022 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility